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Finding the Fourth Proportional to 38,982, 58,443.80 and 12,671.04

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Solution

The fourth proportional to 38,982, 58,443.80 and 12,671.04 is: 18,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,982 : 58,443.80 = 12,671.04 : x
  2. Step 2: Convert to fraction form
    38,982/58,443.80 = 12,671.04/x
  3. Step 3: Cross multiply
    38,982x = 58,443.80 × 12,671.04
  4. Step 4: Simplify right side
    38,982x = 740,543,727.55
  5. Step 5: Solve for x
    x = 740,543,727.55/38,982
  6. Step 6: Final answer
    x = 18,997.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.